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ALSA: maestro3: Allocate resources with device-managed APIs
This patch converts the resource management in PCI maestro3 driver with devres as a clean up. Each manual resource management is converted with the corresponding devres helper, and the card object release is managed now via card->private_free instead of a lowlevel snd_device. Superfluous ac97 private_free callbacks were dropped, too. This should give no user-visible functional changes. Link: https://lore.kernel.org/r/20210715075941.23332-21-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
47c4133953
commit
5c0939253c
@ -2339,16 +2339,13 @@ snd_m3_enable_ints(struct snd_m3 *chip)
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/*
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*/
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static int snd_m3_free(struct snd_m3 *chip)
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static void snd_m3_free(struct snd_card *card)
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{
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struct snd_m3 *chip = card->private_data;
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struct m3_dma *s;
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int i;
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cancel_work_sync(&chip->hwvol_work);
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#ifdef CONFIG_SND_MAESTRO3_INPUT
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if (chip->input_dev)
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input_unregister_device(chip->input_dev);
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#endif
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if (chip->substreams) {
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spin_lock_irq(&chip->reg_lock);
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@ -2359,7 +2356,6 @@ static int snd_m3_free(struct snd_m3 *chip)
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snd_m3_pcm_stop(chip, s, s->substream);
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}
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spin_unlock_irq(&chip->reg_lock);
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kfree(chip->substreams);
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}
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if (chip->iobase) {
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outw(0, chip->iobase + HOST_INT_CTRL); /* disable ints */
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@ -2368,19 +2364,8 @@ static int snd_m3_free(struct snd_m3 *chip)
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#ifdef CONFIG_PM_SLEEP
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vfree(chip->suspend_mem);
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#endif
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if (chip->irq >= 0)
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free_irq(chip->irq, chip);
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if (chip->iobase)
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pci_release_regions(chip->pci);
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release_firmware(chip->assp_kernel_image);
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release_firmware(chip->assp_minisrc_image);
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pci_disable_device(chip->pci);
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kfree(chip);
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return 0;
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}
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@ -2473,7 +2458,7 @@ static int snd_m3_input_register(struct snd_m3 *chip)
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struct input_dev *input_dev;
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int err;
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input_dev = input_allocate_device();
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input_dev = devm_input_allocate_device(&chip->pci->dev);
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if (!input_dev)
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return -ENOMEM;
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@ -2493,10 +2478,8 @@ static int snd_m3_input_register(struct snd_m3 *chip)
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__set_bit(KEY_VOLUMEUP, input_dev->keybit);
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err = input_register_device(input_dev);
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if (err) {
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input_free_device(input_dev);
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if (err)
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return err;
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}
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chip->input_dev = input_dev;
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return 0;
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@ -2506,44 +2489,25 @@ static int snd_m3_input_register(struct snd_m3 *chip)
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/*
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*/
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static int snd_m3_dev_free(struct snd_device *device)
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{
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struct snd_m3 *chip = device->device_data;
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return snd_m3_free(chip);
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}
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static int
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snd_m3_create(struct snd_card *card, struct pci_dev *pci,
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int enable_amp,
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int amp_gpio,
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struct snd_m3 **chip_ret)
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int amp_gpio)
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{
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struct snd_m3 *chip;
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struct snd_m3 *chip = card->private_data;
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int i, err;
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const struct snd_pci_quirk *quirk;
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static const struct snd_device_ops ops = {
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.dev_free = snd_m3_dev_free,
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};
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*chip_ret = NULL;
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if (pci_enable_device(pci))
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if (pcim_enable_device(pci))
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return -EIO;
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/* check, if we can restrict PCI DMA transfers to 28 bits */
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if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
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dev_err(card->dev,
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"architecture does not support 28bit PCI busmaster DMA\n");
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pci_disable_device(pci);
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return -ENXIO;
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}
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chip = kzalloc(sizeof(*chip), GFP_KERNEL);
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if (chip == NULL) {
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pci_disable_device(pci);
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return -ENOMEM;
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}
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spin_lock_init(&chip->reg_lock);
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switch (pci->device) {
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@ -2559,6 +2523,7 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
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chip->pci = pci;
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chip->irq = -1;
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INIT_WORK(&chip->hwvol_work, snd_m3_update_hw_volume);
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card->private_free = snd_m3_free;
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chip->external_amp = enable_amp;
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if (amp_gpio >= 0 && amp_gpio <= 0x0f)
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@ -2588,27 +2553,24 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
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chip->is_omnibook = 1;
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chip->num_substreams = NR_DSPS;
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chip->substreams = kcalloc(chip->num_substreams, sizeof(struct m3_dma),
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GFP_KERNEL);
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if (chip->substreams == NULL) {
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kfree(chip);
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pci_disable_device(pci);
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chip->substreams = devm_kcalloc(&pci->dev, chip->num_substreams,
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sizeof(struct m3_dma), GFP_KERNEL);
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if (!chip->substreams)
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return -ENOMEM;
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}
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err = request_firmware(&chip->assp_kernel_image,
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"ess/maestro3_assp_kernel.fw", &pci->dev);
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if (err < 0)
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goto free_chip;
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return err;
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err = request_firmware(&chip->assp_minisrc_image,
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"ess/maestro3_assp_minisrc.fw", &pci->dev);
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if (err < 0)
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goto free_chip;
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return err;
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err = pci_request_regions(pci, card->driver);
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if (err < 0)
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goto free_chip;
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return err;
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chip->iobase = pci_resource_start(pci, 0);
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@ -2624,11 +2586,10 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
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snd_m3_hv_init(chip);
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if (request_irq(pci->irq, snd_m3_interrupt, IRQF_SHARED,
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if (devm_request_irq(&pci->dev, pci->irq, snd_m3_interrupt, IRQF_SHARED,
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KBUILD_MODNAME, chip)) {
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dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
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err = -ENOMEM;
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goto free_chip;
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return -ENOMEM;
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}
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chip->irq = pci->irq;
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card->sync_irq = chip->irq;
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@ -2642,10 +2603,6 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
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dev_warn(card->dev, "can't allocate apm buffer\n");
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#endif
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err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
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if (err < 0)
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goto free_chip;
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err = snd_m3_mixer(chip);
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if (err < 0)
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return err;
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@ -2674,13 +2631,7 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
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snd_m3_enable_ints(chip);
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snd_m3_assp_continue(chip);
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*chip_ret = chip;
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return 0;
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free_chip:
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snd_m3_free(chip);
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return err;
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}
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/*
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@ -2704,10 +2655,11 @@ snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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return -ENOENT;
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}
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err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
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0, &card);
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err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
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sizeof(*chip), &card);
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if (err < 0)
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return err;
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chip = card->private_data;
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switch (pci->device) {
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case PCI_DEVICE_ID_ESS_ALLEGRO:
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@ -2723,11 +2675,9 @@ snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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break;
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}
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err = snd_m3_create(card, pci, external_amp[dev], amp_gpio[dev], &chip);
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err = snd_m3_create(card, pci, external_amp[dev], amp_gpio[dev]);
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if (err < 0)
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goto free_card;
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card->private_data = chip;
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return err;
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sprintf(card->shortname, "ESS %s PCI", card->driver);
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sprintf(card->longname, "%s at 0x%lx, irq %d",
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@ -2735,7 +2685,7 @@ snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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err = snd_card_register(card);
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if (err < 0)
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goto free_card;
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return err;
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#if 0 /* TODO: not supported yet */
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/* TODO enable MIDI IRQ and I/O */
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@ -2750,22 +2700,12 @@ snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
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pci_set_drvdata(pci, card);
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dev++;
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return 0;
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free_card:
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snd_card_free(card);
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return err;
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}
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static void snd_m3_remove(struct pci_dev *pci)
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{
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snd_card_free(pci_get_drvdata(pci));
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}
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static struct pci_driver m3_driver = {
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.name = KBUILD_MODNAME,
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.id_table = snd_m3_ids,
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.probe = snd_m3_probe,
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.remove = snd_m3_remove,
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.driver = {
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.pm = M3_PM_OPS,
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},
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